diff --git a/app/lib/worker/process.rb b/app/lib/worker/process.rb
index 277545b..1445800 100644
--- a/app/lib/worker/process.rb
+++ b/app/lib/worker/process.rb
@@ -45,7 +45,9 @@ module Worker
     ].freeze
 
     # @param [Integer] thread_count The number of worker threads to run in this process
-    def initialize(thread_count: 2, work_sleep_time: 5, task_sleep_time: 60)
+    def initialize(thread_count: Postal::Config.worker.threads,
+                   work_sleep_time: 5,
+                   task_sleep_time: 60)
       @thread_count = thread_count
       @exit_pipe_read, @exit_pipe_write = IO.pipe
       @work_sleep_time = work_sleep_time
diff --git a/doc/config/environment-variables.md b/doc/config/environment-variables.md
index 513d6db..1b6e0dd 100644
--- a/doc/config/environment-variables.md
+++ b/doc/config/environment-variables.md
@@ -25,6 +25,7 @@ This document contains all the environment variables which are available for thi
 | `WEB_SERVER_MAX_THREADS` | Integer | The maximum number of threads which can be used by the web server | 5 |
 | `WORKER_DEFAULT_HEALTH_SERVER_PORT` | Integer | The default port for the worker health server to listen on | 9090 |
 | `WORKER_DEFAULT_HEALTH_SERVER_BIND_ADDRESS` | String | The default bind address for the worker health server to listen on | 127.0.0.1 |
+| `WORKER_THREADS` | Integer | The number of threads to execute within each worker | 2 |
 | `MAIN_DB_HOST` | String | Hostname for the main MariaDB server | localhost |
 | `MAIN_DB_PORT` | Integer | The MariaDB port to connect to | 3306 |
 | `MAIN_DB_USERNAME` | String | The MariaDB username | postal |
diff --git a/doc/config/yaml.yml b/doc/config/yaml.yml
index 4f45c75..1035ec9 100644
--- a/doc/config/yaml.yml
+++ b/doc/config/yaml.yml
@@ -47,6 +47,8 @@ worker:
   default_health_server_port: 9090
   # The default bind address for the worker health server to listen on
   default_health_server_bind_address: 127.0.0.1
+  # The number of threads to execute within each worker
+  threads: 2
 
 main_db:
   # Hostname for the main MariaDB server
diff --git a/lib/postal/config_schema.rb b/lib/postal/config_schema.rb
index 6000bfc..af3c733 100644
--- a/lib/postal/config_schema.rb
+++ b/lib/postal/config_schema.rb
@@ -130,6 +130,11 @@ module Postal
         description "The default bind address for the worker health server to listen on"
         default "127.0.0.1"
       end
+
+      integer :threads do
+        description "The number of threads to execute within each worker"
+        default 2
+      end
     end
 
     group :main_db do